Tariff Notices

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Rates, charges, rules and regulations

The Northwest Seaport Alliance unifies the marine cargo operations of the ports of Seattle and Tacoma.

At our two harbors, we handle a variety of vessels and cargoes. The NWSA Tariff No. 300 includes the rates, charges, rules and regulations for services performed by participating marine cargo terminals at our North Harbor (Port of Seattle) and South Harbor (Port of Tacoma). If you have questions, please contact Jeff Brubach at 253-592-6211.

Archived tariff documents

Foreign trade zone tariffs

About The Northwest Seaport Alliance

The Northwest Seaport Alliance is a marine cargo operating partnership of the Port of Seattle and Port of Tacoma. We are the fourth-largest container gateway in North America. Under a port development authority, the ports manage the container, breakbulk, auto and some bulk terminals in Seattle and Tacoma.